Denning p



Patented Dee. 370, 1884.

y (No Model.)

` D. P. KBATING. PEEDWATER RBTURN'TRAP POR STEAM HEATING APPARATUS.

; INVENTOR:

BY' MMM 6h ATTORNEYS.

ce". D. c.

WITNESSES Ntra FFICILG DENNING I. KEATING, OF VARDS ISLAND, NEV YORK, N. Y.

FEED-WATER .RETURN-TRAP FOR STEAM-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 310,061, dated December 30, 1834.

Application tiled March 15,1994.

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Be it known that I, DENNING. l?. Klamme, ot 'Vards Island, city, county, and State ot' New York, have invented a new and Improved Feed-Tater Return-Trap for` Steam-lileating ftpparatus, of which the following` is a i'ull, clear, and exact description.

The object of this invention is lo provide a practical and reliable automatic device for returning the water ot condensation oi' steamradiators back to the steam-boiler.

Reference is to be had to the accompanying drawing, forming part of this specification, in which the figure is a sectional elevation el' my invention, showing the parts in the position they assu me before water enters the waterreceiver.

A represents a receiver,"n1ade by preference ol' cast-iron. To this is connected the T-pipe B, to one end ot which is attached, by the valve-coupling C, the water-inlet pipe l), into which the water ot' condensation from the steam-radiators:is conducted, and which conducts said water to the pipe I2, through which l it passes into the receiver A. 'Ihelothcr end of the T-pipc B is connected, by the valvecoupling Il), to the pipe F, which leads drectly to the steam-boiler. (Not shown.)

Vithi n the receiver A is placed the lloat l, which is attached to the arm II, which is secured to the short shaft I, ,journaled in the en- .largement J, made in the receiver A. To one ol.1 the outer ends ol' this short shal't I is secured the lever K, which has the short erankarm 'It formed at one end, which is provided at the outer end with the sliding couuterbalancewcight.:', which is adapted to be secured at any, desired poi nt upon the lever K by the set-screw lr.

At the upper end of the receiver A is fitted the bent pipe L, and to t-hc outer end of this pipe is secured the valve-chamber M, which is connected at its lower end to the steamboiler by the pipe N, and provided. above the entrance ot' the pipes L with the exhaust-pipe 0. The valve-chamber M is inade in two unequal diameters, forming the upper larger chamber, c, and lower small chamber, Z). The

valve or hollow piston I?, which is placed in the chamber M, is also made in two unequal diameters, c fl, which lit, respectively, the The lower portion, d, of the chambers a (No model.)

piston P is reduced in size for a portion ot' its length, as shown at el', to form the exhaustpassage from pipe L to pipe O. rlhe valve c of coupling C opens to pressure from pipe D and closes to pressure from pipe I3, while the valve c opens to pressure from pipe B and closes to pressure from pipe F. rIhis arran ment prevents a backward 'liow of water lo pipe D when steam enters receiver A and prevents steam from the boiler entering the receiver A. The pist-on I has the central passage, c, made through it in the line ol' its length. This opening e may be made small to prevent waste ol' steam, and the piston normally rests at its lower end upon the annular packing j', held in the coupling cap or plate Q, bolted to the lower end of the valve-chainber M, and the upper large end of the piston I? is cupped, as shown, to reduce its weight,

and is made to fit, when the piston is at its' lowest position. upon the shoulder m ot the valve-chamber M. The plate R, which closes the upper end of the valve-chamber M, is Aprovided with the bent pipe S, which communicates at one end with the chamber a, and at the other end with the small passage, j, made in the main casting ofthe valve-chamber M, which passage 1" terminates at the entrance ol' the exhaust-pipe O, and this passage j" is also cut through to the upper chamber, a, at f", immediately under the shoulder or offset p ol' the piston l?. l

ln the pipe S is 'Fitted the cock y, the stem l', of which is connected to the short arm l: of the lever Ii by the connecting-rod y', and the plu g ol' the coel; g is so arranged that it will be turned to closed position-that is, so that it closes the pipe S by the short arnrk` and rod j when the levers II and K are inthe position shown in vfull lines in the drawing, but will be turned so as to open the pipe S when the levers II l stand in the position shown in'doticd lines-the position they assume when the rereceiver A is full or nearly full of water.

rIhe action of the device is as follows: The water of condensation from. the different radiators in the building cnleringpipe I) will pass through valve c and T-pipe I3 into rcceiver Vhen the water reaches a certain level in the receiver A, the weight k on lever l (the weight L having been previously properly set) will overbalancc the iioat Gr, on ac- ICO count of the buoyant action of the water and cause the levers II K to turn the short shaft I and cause short arm k to lift connecting-rodj, which movement will open cock g and permit steam to pass from chamber a, through pipe S, into passage f, to exhaust and through opening f2, under the shoulder or offset p of the valve I. This movement of the steam takes the steam-pressure from above the piston P, and, entering under shoulder p, avoids the formation of a vacuum beneath the shoulder p of the piston I), which permits the steampressure, acting` upon the lower end of the piston l?, to lift the piston in the chamber M, so that the lower portion, d, of the piston will be raised above the pipe Il. The steam then will rush through pipes N and L i rom the boiler into the receiverl A above the water, and will force l[he water in the receiver through valve E and pipe F into the boiler. As the water passes from the receiver A, the loat G and levers I'I-and K will assume their original position, and cause short arm L' to close cock g. The steam-pressure in the chamber a will 'now equal that in the boiler, and this pressure,

acting upon a greater arca at the up'per end of piston l? than is presented to the pressure of the steam at the lower end, will force the piston l? downward in valve-chamber M and open the cxhaustpi pe O and permit the steam in the receiver A to escape to the open air, thus putting all of the parts of the device in condition to repeat the operation when water again accumulates in the receiver A. In this manner it will be seen that the device is perfectly automatic, and that it is practical and perfectly reliable for its purpose.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The receiver A, provided with iioat G, connected to short shaft I, having lever K Z: connected thereto, in combination with cock g, connected to arm k by rod j, and the valvechamber M and automatic piston l?, the valvechamber being connected to the receiver and steam-boilcrand provided with thel exhaust O, adapted to be automatically opened and closed by the Valve P, substantially as and for the purposes set forth.

2. The valve-chamber M, made in two diameters, and the piston l?, made in two diameters to fit the chamber M, and formed with the central passage, c, and cut away at Z) to form the exhaust, in combination with the pipe S, cock g, and passage fj, the valve-chamber being connected to the boiler and receiver A, and provided with the exhaust O and the cock y. arranged to be automatically opened and closed by the movement of the float G in the receiver A, substantially as described.

DENNING l?. IIEATIXG.

\Vitnesscs: 

